Takeru Sato, Takashi Todaka
To develop a magnetic field heat treatment technique using induction heating for Fe-based amorphous (Fe-Si-B), we studied the effects of induction heating on these materials. Heat treatment was carried out selected wound model cores using an induction heating system. To achieve effective induction heating, the magnetic excitation frequency was set to 20 kHz during the heating phase, while DC excitation was applied during the cooling phase. After heat treatment by the induction heating, the magnetic properties of the wound model cores were measured using the exciting current method. The effects and remaining issues of heat treatment under the magnetic field on amorphous wound cores using induction heating were clarified.